How Long Are Certificates of Insurance Valid? (And When to Renew)

A certificate of insurance is valid until the expiration date of the policy it describes, which for most commercial policies is one year from the effective date. The certificate itself does not carry a separate expiration; it simply reflects the policy term, so when the underlying policy renews or lapses, the certificate on file is out of date and you need a fresh one. Because most general liability, auto and workers compensation policies are written for twelve-month terms, the practical answer is that a COI is usually good for up to a year, and often less if the policy was issued mid-term or is cancelled early.

That one-year rule of thumb is where a lot of compliance gaps start. The certificate you collected when you onboarded a vendor looks fine in a folder for months, then quietly goes stale on a date nobody is watching. This guide explains how long a COI actually stays valid, the difference between an expired certificate and an expired policy, when to ask for a renewal, and how teams keep a current certificate on file for every vendor without watching each date by hand.

How long is a certificate of insurance valid?

A certificate of insurance is valid for the policy period shown on it, normally one year, matching the effective and expiration dates of the underlying policy. The ACORD 25 certificate of liability insurance lists those dates for each coverage line, and the certificate is only proof of coverage through the latest of those expiration dates. After that, the document tells you nothing about whether the vendor is still insured. A few policies run shorter terms, such as a six-month auto policy or a project-specific policy that ends when the job does, in which case the certificate is valid for that shorter window.

One important point: the certificate is a snapshot from the day it was issued. It does not update itself when the policy renews, when a limit changes, or when the policy is cancelled. So even inside the stated period, a certificate is only reliable evidence as of its issue date, which is why coverage should be re-verified at renewal rather than assumed to roll over.

Why do most certificates of insurance expire after one year?

Most certificates expire after one year because most commercial insurance policies are written for a one-year term and renewed annually. The certificate inherits the policy dates, so when general liability, commercial auto, umbrella and workers compensation all renew on the same annual cycle, the certificate expires with them. When the vendor renews, their agent issues a new certificate with the new dates, and that is the document you need on file. If you are holding a certificate that is more than a year old, the policy behind it has almost certainly renewed at least once, and the version you have no longer reflects current coverage.

What is the difference between an expired certificate and an expired policy?

An expired certificate means the document on file has passed its stated expiration date, even though the underlying policy may have renewed and coverage may still be in force. An expired policy means the actual insurance contract is no longer active. The two are not the same. A vendor can have fully current coverage while you hold an expired certificate simply because nobody requested the renewal version. The reverse is also possible: a certificate can show a future date while the policy was cancelled mid-term, so the paper looks current but the coverage is gone.

This is why tracking only the date printed on the certificate is not enough. You want to know both that the certificate on file is current and that the policy behind it is still in force, which means re-requesting a certificate at renewal and watching for any mid-term cancellation in between.

When should I request a renewal certificate of insurance?

Request a renewal certificate about 60 days before the current one expires, then follow up at 30 and 15 days if the vendor has not sent it. Asking early gives the vendor and their insurance agent time to issue the new certificate before the old coverage period ends, so you are never left with an expired COI while the vendor is still working for you. Sending one reminder the week of expiration almost guarantees a gap, because the vendor has to contact their agent, the agent has to issue the certificate, and that takes time you do not have if you wait until the last minute.

A simple cadence works well: a first request at 60 days, a reminder at 30 days, and a final reminder at 15 days, with the vendor flagged as non-compliant if no current certificate arrives before the expiration date. Setting that cadence up once, per vendor, is exactly the kind of repetitive scheduling that software handles far better than a person trying to remember dozens of renewal dates.

What happens if a vendor's certificate of insurance expires?

If a vendor's certificate expires, you lose your proof that the vendor carries the coverage your contract requires. If a loss happens while the certificate is lapsed, you may have no current certificate to point to, and if the policy itself actually lapsed, you could be left holding a claim you assumed the vendor's insurer would cover. Even when the vendor's coverage is genuinely still active, an expired certificate is a documentation failure that an auditor, your own insurer, or opposing counsel after an incident will hold against you. The safe position is to keep a current certificate on file for every active vendor at all times, which means chasing the renewal before the old one expires rather than after.

How do you keep certificates of insurance current automatically?

The reliable way to keep every certificate current is to track each expiration date and chase each renewal automatically instead of by hand. COI renewal tracking software reads the effective and expiration dates off each certificate, watches those dates for you, sends the vendor automated reminders at 60, 30 and 15 days, surfaces any policy cancelled mid-term, and re-checks the renewal certificate against your requirements when it arrives. Instead of a spreadsheet someone has to read every day, you get a live renewal dashboard that flags only the certificates that need attention.

That matters because renewal tracking is the part of COI compliance most likely to slip. Verifying a certificate once at onboarding is straightforward; doing it again, on time, every year, for every vendor, is where manual processes fail. To see how renewals fit into the wider workflow of collecting, reading and verifying certificates, see our guide to certificate of insurance tracking software, and to learn how to confirm a renewal certificate is genuine before you file it, read how to verify a certificate of insurance.

The renewal cadence at a glance

Where the renewal requirement comes from

The obligation to keep a current certificate on file usually lives in the vendor agreement, which sets the coverages, limits and the requirement to provide renewal certificates. Getting that agreement signed cleanly is the first step, and teams that send vendor contracts for signature with a tool like online document e-signing keep the executed agreement and the insurance requirements together from day one. Once a vendor is onboarded, the same renewal discipline applies to the rest of their paperwork: teams that run vendor purchasing through purchase order management software and digitize the supporting W-9s, licenses and tax forms with AI document data extraction end up with a complete, current vendor file instead of a folder of expired documents.

The short version: a certificate of insurance is valid for the policy period it shows, usually a year, and it goes stale the moment that period ends or the policy is cancelled. The work is not understanding the rule, it is keeping a current certificate on file for every vendor, every year, without missing a date. That is what renewal tracking is for.